Abstract: A keyboard musical instrument has a sliding manual cover comprised of a main cover and a sub cover. The main cover is slidable on manual cover guides in forward and rearward directions with respect to the main body between an open position and a closed position. An engaging member is provided on a predetermined portion of the main cover at or closer to an end thereof toward the open position. The sub cover is flexibly coupled to the main cover. A guide device, formed preferably by pinions and guide channels, is provided in the main body in engagement with the sub cover and downwardly guides the sub cover as the main cover is slided on the cover guides toward the open position. At least one support member is mounted in the main body for pivotal movement in the forward and rearward directions, on one end of which is provided an arm which is disposed to engage the engaging member when the main cover is slided on the cover guides toward the open position.

Abstract: An electronic piano, comprises: a sound box having a configuration as in a stringed piano; an electronic keyboard carried by the sound box; an amplifying system; and, a control system for the electronic keyboard and the amplifying system. In a configuration corresponding to an upright piano, the sound box has first and second tweeters mounted through the top and directed upwardly, first and second mid-range speakers mounted through the rear wall and directed rearwardly, and first and second woofers directed angularly toward respective front-bottom corners of the sound box. The front wall has two openings through which sound reverberating inside the sound box is emitted.

Abstract: A keyboard assembly is to be connected to a keyboard port of a host computer and includes a keyboard housing having opposite first and second horizontal faces and opposite vertical side walls at opposite longitudinal ends of the horizontal faces. An array of organ keys is disposed resiliently on the first horizontal face. An organ circuit array is disposed in the keyboard housing and is associated operably with the organ keys. An array of computer keys is disposed resiliently on the second horizontal face. A computer circuit array is disposed in the keyboard housing and is associated operably with the computer keys. A pair of upright support panels is mounted respectively on the side walls of the keyboard housing. Each of the support panels has two opposed distal ends which project respectively past the organ keys and the computer keys. A processor unit is connected electrically to the organ circuit array and the computer circuit array and is to be connected to the keyboard port of the host computer.

Abstract: A stand structure for a keyed instrument having a main body with a keyboard at the front thereof, the stand structure including a first side plate and a second side plate, the first side plate and the second side plate being adapted for supporting at least a lower portion of the main body arranged between the first side plate and the second side plate; a back plate arranged between the first side and the second side plate for reinforcing the first side and the second side plate, the back plate being adapted to be arranged below the main body; a first single securing member adapted for interconnecting the main body, the back plate and the first side plate; a second single securing member adapted for interconnecting the main body, the back plate and the second side plate; and a pair of screw means, each of the pair of screw means being adapted for extending laterally through one of the first side plate and the second side plate and into the lower portion of the main body so as to secure the main body to the one

Abstract: A keyboard cover apparatus for an electronic keyboard instrument has a keyboard main body having a supporting member on each side thereof. A keyboard cover member has an arm on each side thereof and the arm is rotatably supported by the supporting member. An interlocking device is provided to hold the keyboard cover member in a first closing position in which a predetermined clearance is maintained between the keyboard cover member and the keyboard main body and in a second position in which the clearance is substantially eliminated.

Abstract: A keyboard lid comprising a lid body and a frame plate attached to the edge of the lid body for reinforcing it in which said frame plate has a decoration plate arranged at the outside of said lid body and a reinforcing plate arranged at the inside of said lid body and that said decoration plate and said reinforcing plate are formed separately with each other.

Abstract: An audio mixer console and a power amplifier are mounted in a self contained carrying case that provides both protection for the console and amplifier during transportation and storage and a support during use. A power amplifier is fixedly connected between lower portions of first and second spaced sides at the upper end of which is pivoted a front section of the mixer console. In stored position the mixer console extends downwardly between the sides to a position adjacent the amplifier, and a detachable cover is secured to the sides to extend over both the mixer console and amplifier. Parts of the mixer console and amplifier form at least portions of a forward cover of the completed carrying case.

Abstract: Keyboard instruments incorporating sound systems for generating musical tones are disclosed. In a first keyboard instrument, speakers are mounted near a keyboard, and are arranged upright to be directed to the keyboard on the front side, thereby allowing a performer to clearly grasp the sound quality of performance tones. In a second keyboard instrument, which comprises a Helmholtz resonator consisting of a resonance port and a cabinet, an electro-acoustic transducer mounted on the outer surface of the cabinet and a driver for driving the transducer so as to cancel an air counteraction from the resonator, the size of a sound system is reduced, and the frequency characteristics, especially the low-frequency reproduction characteristics of the sound system are improved.

Abstract: A keyboard instrument includes an instrument main body, a keyboard cover, a link member, a guide abutment portion, and a guide member. The instrument main body has a keyboard portion arranged thereon. The keyboard cover pivots about a portion near a rear end thereof to open/cover the keyboard portion on the instrument main body. The link member has one end pivotally supported on the instrument main body, and the other end pivotally supported on a portion near the rear end portion of the keyboard cover. The guide abutment portion is arranged at a position separated from the position, at which the other end of the link member is pivotally supported, in a direction of a rear surface of the instrument main body by a predetermined distance. The guide member is fixed in the instrument main body so as to cause the guide abutment portion to be moved in contact with the guide member upon opening/closing of the keyboard cover.

Abstract: This invention relates to a keyboard apparatus for a musical instrument such as a musical keyboard instrument for electronic pianos, electronic organs, or acoustic keyboards. This keyboard apparatus has a musical instrument body, a plurality of keys attached to the musical instrument body, and a console panel attached to the musical instrument body. A key concealing unit for concealing the base end portions of the plurality of keys are integrally molded with one edge of the console panel.

Abstract: The acoustic apparatus for generating a musical tone preferably adopts a speaker system utilizing a resonator constituted by a cavity and an acoustic mass for causing the cavity to acoustically communicate with an external region or a speaker system utilizing a back-loaded horn so that frequency characteristic is improved. In a musical instrument, including a resonator, like a guitar, all or part of a body is partitioned as the cavity, and acoustic mass such as a resonance port is disposed in the cavity as needed to set a desired resonance frequency. In a musical instrument having side plates or leg portions, the resonance port or the back-loaded horn is housed in the side plates or the leg portions.

Abstract: A sound generating outer garment, such as a suit, a coat, or a jacket, includes switches and a sound generating circuit. The switches are connected to the sound generating circuit, and both the switches and the sound generating circuit are mounted in the garment. The sound generating circuit produces a sound or sounds in response to the actuation of one or more of the switches. Preferably, a switch is positioned at each shoulder and at each elbow of a coat or a jacket and at each knee of a pair of pants. The sound generating outer garment may also include a transmitter for transmitting the sound or sounds that are produced to an AM or FM receiver. Each switch may include a flexible and conductive first outer lamina and a flexible and insulating second outer lamina. Interposed between the two outer laminas is a resilient insulating cushion. The cushion has a number of holes formed through its thickness.

Abstract: A lid for an electronic musical instrument is disposed to be vertically pivotal about a pivot and covers a keyboard section of a musical instrument body when it is closed. In the lid structure, the pivot is arranged at a position separated forward from the rear end of the lid and downward from the lower surface of the lid by predetermined distances, respectively, and the rear end portion of the lid is housed, when it is opened, in the musical instrument body through an opening formed in the upper surface of the musical instrument body.

Abstract: A housing structure of a keyboard instrument has: a musical instrument main body having a keyboard portion in which a plurality of keys are aligned in order; a cover having a hinge portion and a foldable portion along an alignment direction of the keys so as to open and cover an upper surface of the musical instrument main body; and a cover lock portion formed in the upper surface of the musical instrument main body for locking the cover when the cover is opened and folded at the foldable portion. The hinge portion consists of a flexible synthetic resin which may be formed integrally with the cover or separately from the cover.

Abstract: An electronic musical instrument with a keyboard has a musical instrument housing with the keyboard and an operation panel arranged adjacent to the keyboard, and a cover for covering the keyboard and the operation panel. Guide projections are formed at two sides of the keyboard and the operation panel of the musical instrument housing. The cover has first and second cover bodies, a first coupling device for coupling the first and second cover bodies in a foldable manner, and a second coupling device for pivotally coupling a rear end portion of the first cover body with the musical instrument housing. The front end portion of the second cover body is guided and slid along the guide projections when the cover is opened or closed. When the cover is open, the outer surface of the second cover body stands facing forward and serves as a music rack.

Abstract: An electronic musical instrument has a pivotal cover which mounts an operation panel for controlling the functions of the instrument. Cords for connecting a main electric circuit incorporated in a musical instrument main body and control switches and elements in the operation panel are arranged through a hollow shaft constituting a pivot structure of the cover so that the connecting cords are not exposed to outside of the instrument. A foldable music sheet stand may be provided at an open end of the cover opposite to its pivot structure. When the cover is opened, the music stand can be extracted to stand up above the operation panel.

Abstract: On an electronic musical instrument, a loudspeaker is fitted to a space through a bellows. Therefore, it can be freely pulled out and push into the space. Further, the use of the bellows contribute to making the space smaller and an acoustic effect easily changeable.

Abstract: A housing structure of a keyboard instrument has: a musical instrument main body having a keyboard portion in which a plurality of keys are aligned in order; a cover having a hinge portion and a foldable portion along an alignment direction of the keys so as to open and cover an upper surface of the musical instrument main body; and a cover lock portion formed in the upper surface of the musical instrument main body for locking the cover when the cover is opened and folded at the foldable portion. The hinge portion consists of a flexible synthetic resin which may be formed integrally with the cover or separately from the cover.

Abstract: A support device for supporting first and second units has an instrument platform having first and second spaced opposite parallel planar surfaces. The instrument platform is rotatably supported for rotation about an axis of rotation. A first joining subassembly pivotally mounts the first unit on the first surface of the instrument platform for rotation about an axis spaced from and parallel to the axis of rotation. A first pair of locking devices lock the first unit in abutting relation to the first surface in locked position and release the first unit to hang freely at various angles with the first surface in unlocked position whereby the first unit is in playing position when the instrument platform is horizontal with the first surface up and in stored position, hanging from the first surface, when the instrument platform is horizontal with the first surface down.

Abstract: A method and a system of organizing, arranging and rear-ranging the number and sequential order of audio effects circuit modules by the changing, including inserting, removing, exchanging and interchanging, of said modules providing noiseless, uninterrupted signal flow through a system during each of said changing operations. A preferred embodiment of the method comprises an audio signal processing system which includes a main housing, containing a main circuit apparatus, module-receiving recesses, and modules, fabricated to be received in the recesses, each module having an electronic audio effect circuit which affects the signal in a unique way to provide a different sound output. A plurality of switches and potentiometers lie on either the main housing or the module, and each module has markings indicating which controls are to serve its operation.

Abstract: A keyboard musical instrument is provided which comprises a main body which has a playing position and an upright position and first and second legs which are positioned on the front and rear of the main body for supporting the main body in the playing position. A hinge device connects the main body and the first legs such that the main body is pivoted about the hinge means for moving the main body between the playing position and the upright position.

Abstract: The present invention is a single channel string ensemble sound system for an electronic organ having a keyboard formed by a plurality of keys and a signal generating means responsive to the depression of the keys. The sound system comprises an electronic mixer, an amplifier, a first transducer and a second transducer, wherein the first transducer is driven by the output of the amplifier while the second transducer is driven approximately 180.degree. out of phase electronically by the same output, and wherein the second transducer is physically oriented in a plane approximately 90.degree. from the plane of the first transducer or speaker.

Abstract: A mechanism is disclosed for providing safe locking of the lid of an electronic musical instrument.

Abstract: A portable electronic musical instrument is composed of two separable units, that is an upper unit including a controlling panel and a lower unit including a keyboard. For performance, the upper unit is vertically mounted on the lower unit and for portage the upper unit is horizontally mounted on the lower unit to form a portable box like structure. Both side boards of the lower unit are inclined toward the front surface of the keyboard so as not to interfere with performers hands in playing. Base portions of side boards of the upper unit are also inclined towards the keyboard so as to stabilize the upper unit in the performable state.

Abstract: Apparatus to be used in conjunction with the practicing of a musical instrument is described. The circuit contains and interconnects an electronic metronome, a timer, a tape recorder, a tone generator, earphones, and the electronics for integrating these elements, as well as an internal power supply. This apparatus is particularly well suited to the needs of the advanced student who plays well and desires to progress to the professional level since the interaction of the elements forces the student to play the instrument with speed and accuracy while under time pressure. The combination of elements also leads to a flexibility of functions. Finally, all elements are implemented from electronic components, resulting in a small, low cost, reliable system.

Abstract: A removable dust cover for the stepped keyboard of an electronic organ and means for latching and locking such cover in place between the base, sidewalls and back top member of the console or cabinet confining such keyboard and the use of transparent, tinted and/or colored rigid plastic material fit snugly to the cabinet for protecting the keyboard from contaminents or destructive forces to which such keyboard is accidentally or intentionally subjected.